I believe you can download your wallet, import it into your own geth node and then redeem through the old dap. But I do not know the command to sweep in the seed to geth...maybe someone could post how to load a encrypted wallet into geth. I know how to do it in eth but eth cannot work with gnosis.

I have a theory that this is related to the contract running out of funds. I was able to sell 1 share (at only.95) and then 10 shares (at .94). Now I try to sell 10 shares and I get the 500 error. So now I cannot redeem winnings, sell shares or send shares. It appears my funds are indefinitely locked in the contract.

SOLVED: I started investigating the successful transactions and it appears that there is quite a bit of variance in the gas consumed by each redemption. If I tried to clear all 50 shares at once, it appears the contract would sequentially zero out the opposing positions. Apparently there was not enough gas to run them all in one batch. I reduced my sell size in random amounts and was able to eventually get all the ether out of the contract (a lost about 5 ETH in slippage). You can see the successful transactions here (#30 - #39)

We are almost sure that it is something else:The transactions are created with the lightwallet https://github.com/ConsenSys/eth-lightwallet and then send to a geth node. The error occures if the geth node does not accept the transaction. We updated to the latest geth node and there was a change that it will only broadcast transaction with a "secp256k n/2" signature value.

This is more or less random. So when you changed around values some created randomly valid signatures and others not.

Anyway - thanks for your investigation - we will try to fix it as soon as possible.

I also cannot redeem winnings. But my issue occurs with the "Ether market cap >$1B on 10/3" event. Instead of the "Cannot connect to ethereum node" message that charlieknoll gets, my transaction gets confirmed, but I still have the shares, still have a "redeem winnings" button, and do not have the eth. I have tried several times with the same result. Let me know if you need more details. Thank you.

what exactly are you talking about: http://groupgnosis.com/dapp/#/transactionsThis view? This only shows the right Ether value for buy transactions - for all other it shows 0. However - if you have a look at the redeem transaction on ether.camp you should find the flow of Ether to your address. (the site is unfortunately not always fully working)